#1D3A89#1D3A89

#1D3A89 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.8% C 0.137 H 265.1°. Best body text is #FFFFFF at 10.40:1 contrast (WCAG AA passes).

Color values

HEX	#1D3A89
RGB	rgb(29, 58, 137)
HSL	hsl(224, 65%, 33%)
HSV	hsv(224, 79%, 54%)
CMYK	cmyk(78.8%, 57.7%, 0%, 46.3%)
CIE-LAB	lab(27.00, 19.49, -47.18)
CIE-LCH	lch(27.00, 51.05, 292.44°)
OKLab	oklab(37.78% -0.0116 -0.1361)
OKLCH	oklch(37.78% 0.137 265.1)
XYZ	xyz(6.5335, 5.0927, 24.3007)
Luminance	0.0509 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3A89 #896C1D

analogous

#1D7089 #1D3A89 #361D89

triadic

#1D3A89 #891D3A #3A891D

tetradic

#1D3A89 #891D70 #896C1D #1D8936

square

#1D3A89 #891D70 #896C1D #1D8936

split-complementary

#1D3A89 #89361D #70891D

monochromatic

#080F24 #122556 #1D3A89 #284FBC #486FD8

Accessibility & contrast

On white

10.40

#1D3A89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#1D3A89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3A89

10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3A89	#FFFFFF	#000000	##FFFFFF
##1D3A89	1.00	10.40	2.02	10.40
#FFFFFF	10.40	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458C

Deuteranopia (green-blind)

#003B87

Tritanopia (blue-blind)

#004E5B

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1d3a89;
/* rgb */ color: rgb(29, 58, 137);
/* oklch */ color: oklch(37.8% 0.137 265.1);

Tailwind

colors: {
  custom: {
    50: '#6b6fac',
    500: '#1d3a89',
    950: '#000000',
  },
}

SCSS

$custom: #1d3a89;
$custom-light: #6b6fac;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3a89",
  "rgb": {
    "r": 29,
    "g": 58,
    "b": 137
  },
  "hsl": {
    "h": 223.889,
    "s": 65.06,
    "l": 32.549
  },
  "oklch": {
    "l": 0.37777,
    "c": 0.13663,
    "h": 265.1
  },
  "luminance": 0.05093
}

Semantic roles & 50–950 ramp

primary

#1D3A89

secondary

#BA9B47

accent

#BB40E8

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1D3A89

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →